This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 40320 |
5 | 120 |
6 | 371993326789901217467999448150835200000000 |
7 | 5040 |
8 | 126886932185884164103433389335161480802865516174545192198801894375214704230400000000000000 |
9 | 10888869450418352160768000000 |